It's only used for rarely-used deprecated GL features
(feedback/rasterpos), so we can skip the memory allocation and
initialization for it most of the time.

Saves about 659k (out of 1605k) of maximum memory size according to massif
on simulated vc4 glsl-algebraic-add-add-1

Reviewed-by: Brian Paul <brianp@vmware.com>

Whenever a draw happens or some other function call might change the result
of future glReadPixels calls, we must invalidate the cache.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

Compute needs a new and different validation path.

Changes from v2:
 - make use of unreachable() instead of assert() when the pipeline is
   invalid
 - move the st_pipeline enumeration to st_context.h instead of st_api.h

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

Just do it where needed (before drawing, clearing, etc).

Reviewed-by: José Fonseca <jfonseca@vmware.com>

Reviewed-by: Dave Airlie <airlied@redhat.com>

this just ties the mesa code to the pre-existing gallium interface,
I'm not sure what to do with the CSO stuff yet.

0.2: fix min/max bounds

Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Tungsten Graphics Inc. was acquired by VMware Inc. in 2008.  Leaving the
old copyright name is creating unnecessary confusion, hence this change.

This was the sed script I used:

    $ cat tg2vmw.sed
    # Run as:
    #
    #   git reset --hard HEAD && find include scons src -type f -not -name 'sed*' -print0 | xargs -0 sed -i -f tg2vmw.sed
    #

    # Rename copyrights
    s/Tungsten Gra\(ph\|hp\)ics,\? [iI]nc\.\?\(, Cedar Park\)\?\(, Austin\)\?\(, \(Texas\|TX\)\)\?\.\?/VMware, Inc./g
    /Copyright/s/Tungsten Graphics\(,\? [iI]nc\.\)\?\(, Cedar Park\)\?\(, Austin\)\?\(, \(Texas\|TX\)\)\?\.\?/VMware, Inc./
    s/TUNGSTEN GRAPHICS/VMWARE/g

    # Rename emails
    s/alanh@tungstengraphics.com/alanh@vmware.com/
    s/jens@tungstengraphics.com/jowen@vmware.com/g
    s/jrfonseca-at-tungstengraphics-dot-com/jfonseca-at-vmware-dot-com/
    s/jrfonseca\?@tungstengraphics.com/jfonseca@vmware.com/g
    s/keithw\?@tungstengraphics.com/keithw@vmware.com/g
    s/michel@tungstengraphics.com/daenzer@vmware.com/g
    s/thomas-at-tungstengraphics-dot-com/thellstom-at-vmware-dot-com/
    s/zack@tungstengraphics.com/zackr@vmware.com/

    # Remove dead links
    s@Tungsten Graphics (http://www.tungstengraphics.com)@Tungsten Graphics@g

    # C string src/gallium/state_trackers/vega/api_misc.c
    s/"Tungsten Graphics, Inc"/"VMware, Inc"/

Reviewed-by: Brian Paul <brianp@vmware.com>

Split from patch implementing ARB_draw_indirect.

v2: Const-qualify the struct gl_buffer_object *indirect argument.
v3: Fix up some more draw calls for new argument.
v4: Fix up rebase conflicts in i965.
v5: Undo const-qualification

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

Moved draw_arrays() to st_draw_feedback.c and removed draw_arrays_instanced().
draw_arrays() was used by nobody else.  Now there's just one "draw" entrypoint
into the draw module.

Signed-off-by: Brian Paul <brianp@vmware.com>

Gallium supported only a single viewport/scissor combination. This
commit changes the interface to allow us to add support for multiple
viewports/scissors.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: José Fonseca<jfonseca@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>